This is one of the best speaker attunetor using transformer. Best matching for JBL, Altec, Coral, GOTO system, use for upper than 300Hz frequency.

It is very rare and good working condition. High recommend for mania who care to tone of sound. Using transformer prevent loss of signal and make sound more detail. Due to age it has some scratches or dirty marks.

Click to the image to view it in big size and please read our busines term before making your decision